Rotary-runner pump.



l. R. & F. 'H. PALMER.

ROTARY RUNNER PUMR. mgeucmou FILED JAN- 1!. 19m.

Patented Mar. 12, 1918.

rm 6 mm m 2 E R lllli Hill n erm ne r a rawr option JAMES B. PALMER AND FENN H. PALMER, 013 LOS ANGELES, CALIFORNIA.

ROTARY-RUNNER PUMP.

To all whom it may concern:

Be it known that we, JAMES R. PALMER and FENN H. PALMER, citizens of the United States, residing at Los Angeles, in the county of Los Angeles and State of California, have invented a new and useful R0- tary-liunner Pump, of which the following is a specification.

This invention relates to a pump of the character shown in our Letters-Patent of the United States No. 1,110,569, patented Sept. 15, 1914, for self-centering hydraulic bearings for pump shafts, and an object of the invention is to produce a pump embodying all the advantages of the pump shown in said patent and having points of superiority thereover, with an object to maximize elliciency and smoothness of operation and discharge of liquid, and to minimize vibration of the rotary parts; to minimize friction and resistance to rotation; to minimize leakage and short circuiting or back flow of the liquid being pumped.

Also to maximize the power of the pump at a given speed and to minimize the speed of the pump for a given delivery or head of discharge.

A further object is to cheapen construction and cost of assembling.

Other advantages and objects may appear from the subjoined detail description.

The accompanying drawings illustrate the invention in the form at present deemed most desirable.

Figure 1 is a diagrammatic elevation on a small scale, of a pump constructed in accordance with the invention and installed in a well.

Fig. 2 is a fragmental elevation on a larger scale, partly in section, of a pump constructed in accordance with this invention and installed in a well.

Fig. 3 is an enlarged fragmental elevation, partly in section of the pump shown in Figs. 1 and 2, detailing a runner on a shaft and a stop or brake inclosed in and fixed to the pump tubing Portions of the runner shell are broken away to expose interior construction.

Fig. 4 is a plan section on line 412*, Figs. 2 and 3.

Fig. 5 is. a plan section on line as, Figs. 2 and 3, except that a three-bladed runner is shown in plan.

Fig. 6 is an enlarged detail of a fragment Specification of Letters Patent.

' water stops composed of any suitable Patented Mar. 12, 1918.

Application filed January 17, 1916. Serial No. 72,628.

of the slitted sleeve and pump casing shown in Fig. 4.

Curved arrows in Figs. 2, 3, 1, 5 indicate the direction of rotation. l

The well easing 1, pump tubing or casing 2 and shaft 3 are of the usualconstruction, arrangement and operation, the shaft being supported in the usual manner, not shown, and driven by any suitable means at any suitable speed, say, 2000 revolutions, more or less, per minute. To said shaft is fixed any suitable number of runners, those at the bottom of the pump being preferably arranged closer together than those higher up.

Said runners may be disposed at any suitable points along the shaft, there being ele- The ments interposed between the runners.

stop elements shown in the present case are U-shaped resilient sheet metal strips 4 straddling the shaft 3 and held in place by cap screws 5 screwed through the pump tubing 2-and into the central bend of the U. Said strips are constructed to closely fit inside the pump casing and each presses against the wall of the pump casing with such force that the U-shaped strip is thereby held firmly in place. Said strips may be eight inches, more or less, in depth; care being taken that their depth lengthwise of the pump casing shall be sufficient to prevent the stops from turning cornerwise in the tubing while they are being shoved to the place where they are to be fastened. This construction avoids liability of the stops getting cramped or caught inside the tubing in the process of inserting or withdrawing them from the pump casing.

In said patent, runners are shown, each comprising a hollow sleeve and a propeller fixed together and adapted to rotate together, and also fixed to the shaft to rotate therewith; and means are shown for forcing water through longitudinal openings made in the hollow sleeves. Said sleeves are nearly of the same diameter as the inside of the pump casing. The outside diameter of the sleeve is preferably about a inch less than the inside diameter of the pump casing so that there is not to exceed inch clearance all around any sleeve between it'and the pump casing.

The sleeve in the patent is provided with orifices produced by cutting out of and pressing in from the body of the sleeve,

' tongues to constitute a number of wings to act upon the liquid and force it Outinto the space between the sleeve and the pump casing when the sleeve is rotated.

- e have discovered that a great improvement in efliciency is effected by constructing the runner sleeve of a true hollow cylindric form from end to end, with smooth cylindrical bore, minimizing the width of the slits, and cutting the walls of each slit tangentially-on an angle without bending in the material of the sleeve; internal projections being avoided.

In the present invention the sleeve 6 is provided at its ends with unslit portions 7, as in the former construction; but in the present instance the sleeve continues in true cylindrical form inside and outside from end to end and the slits 8 with which it is provided are comparatively narrow, say, onesixteenth of an inch, more or less. in width of opening at the inner side. These slits are I gentlallv through the sleeve above the propeller blade, presenting forwardly on the inside, a sharp edge 9, and widening outwardly toward the rear at the periphery of the sleeve, to emit liquid.

The purpose of cutting the slits on an angle is to provide a shearing edge as at 9, which will, with minimum expenditure of power during the operation of the pump. shear from the water column passing up through the sleeve, a portion of water sufficient to fill the narrow annular bearing space 10 between the sleeve and the pump casing.

Said slits are easily made by first sawing into the sleeve rearwardly aslant straight longitudinal slits of a width corresponding 7 to the width desired for the inside orifice -0f the slits and then milling out the rear outer side of the slit to form the rear tangential wall 9' diverging outwardly and rearwardly from the front wall 9" ofthe slit. ThlS may be doneby a bevel cutter having a plain face to run on the front wall 9".

It is important that the runners, including the running sleeve 6, the propellerblades' l1 and the hub 12, be firmly fixed to the shaft to prevent rotation, oscillation or looseness relative to the shaft, and for this purpose "the hub is provided with a hollow cylindrical extension 13 that projects beyond the end of the sleeve 6; and the hub 12 with extension 13 fits the shaft 3 tightly. A

transverse hole is bored entirely through the hub extension 13 to form a seat 14: of

one diameter and companion drift 14: of

less diameter, co-axial. therewith; and a socket 15, corresponding in diameter to the seat 14 is bored into the shaft 3 to receive a. pin 16 that fits in the seat 14 and socket '15 to hold the hub firmly in place when said seat and socket are alined with each other.

referably longitudinal slits, cut tan-' A drift 17 alined with the drift 14' is bored through the shaft 3 into the socket 15 so that a tool may be inserted through the drifts 14' and 17 to drive out the pin 16 when it is desired to move the runner on or remove it from the shaft. A malleable tubular sleeve 18 of iron, steel or other suitable metal-is driven onto the joint thus formed, and pins 24 are driven through holes 25 made therefor through the coupling sleeve 22 and the shaft sections 3, thus securing the sections firmly together.

The pump casing is shown of two different diameters, as mdicated at 2 and 2", thelower casing 2" being of larger diameter.

than the upper pump casing 2. The bottom runner comprising the sleeve 7 and pro peller 11', is constructed substantially as the runners above described, but is of greater diameter. The runners a of smaller diameter being mounted in the upper casing 2 of smaller diameter and the larger runner I) being mounted in the pump casing- 2 of larger diameter, the larger runnerb will im pel the liquid upward at a speed greater than that of the impellers 11 of the smaller diameter that receives such liquid; and this results in a greater dischargeof liquid than could be obtained were all the pump casing and runners of the smaller diameter. This increased output is secured at minimum expense of installation and cost of power.

. The spacing of the propellers and stops inside the pump casing varies in different pumps to correspond with the diameters and speeds of the pumps respectively in order to secure the maximum efliciency. It is found that with a speed of between eleven and twelve hundred revolutions per minute, in a seven-inch pump casing the best results are tion, stops and runners therefor, are assembled in the factory. The propellers are cast or otherwise formed, and then the runner sleeves are dr ven thereon and This will give practically the l brazed thereto.

Preferably the propellers are located at the lower ends of the runner sleeves for convenience of attaching to the shaft, and the sleeve extends for some distance above the propeller, thus affording space inside the sleeve and above the propeller to supply hydraulic or hydrostatic pressure to the slit above the propeller, thus to produce the hydraulic or hydrostatic bearing outside the sleeve between the sleeve and the tubing.

In the operation of assembling at the factory as above referred to, the runners are driven onto the shaft with a close fit. The pins 16 are then inserted into the seats therefor in the hub extensions and the shaft, and the malleable sleeves are then driven on and dented as above sug ested.

With 20-foot sections -inch diameter of pump casing, the first 20 feet of shaft should have five runners and the subsequent shaft sections should each have four runners equally spaced apart. The first three runners may be spaced equal distances apart and the next runner above may be spaced five feet from the third propeller from the bottom and the next propeller may be spaced five feet apart from that; and so on; the propellers there-above being fixed to the shaft at intervals of five feet unless a high-speed pump is to be produced, and in that case the runners will be proportionately spaced farther apart.

Each pump casing section is drilled and tapped with holes 26 at intervals to correspond-with the positions of the stops to be installed in said section.

When the appropriate number of propellers have been fixed on a 20-foot shaft section then said section is inserted into the upper end of the pump casing section of appropriate diameter therefor, and then one of the stops or brakes is inserted into such casing section; then the shaft section is advanced into the cas ng section and so on, until the entire shaft section with its propellers and with a stop between each two propellers is inserted sufficiently into the casing section to bring the stops to predetermined positions about one inch below the positions that are to be occupied by the propellers respectively when the pump is installed.

Then holes are drilled and tapped in the stops by tools inserted through the holes 26 previously drilled and tapped in the pump casing. and cap screws 5 are screwed into said holes in the pump casing and stops to secure the stops in place. Preferablv the bot om stop of each section is inserted into the pump casing section below ,the lowermost runner of that section after the other parts have been assembled as above described, thus saving the labor of forcing such stop from end to end of the pump casing section. A coupling sleeve 22 is fixed by a pin 2-L to the upper end of each shaft section. The pump sections respectively completed in this manner at the factory or machine shop are shipped in this completed condition to the well where they are to be installed.

It is to be noted that the shaft section and its propellers thus assembled in any pump casing section may be pulled up or shifted in said pump casing section quite a distance toward the top of such casing section, so that before any runner will interfere with the stop next above, the shaft may be made to project well from the upper end of the casing section, thusatfording plenty of room between the casing sections to allow a workman to insert a key 21 into the seats 23, 20

formed therefor in the coupling sleeve 22 and the upper end 0 of the lower shaft section to which such sleeve has been fixed. Then the lower end cl of the next upper section of' the shaft will he slipped into the I sleeve, at the same time guiding the parts to seat the upper end of the key in the seat therefor in the lower end of the upper section. When the two sections have thus been brought together a pin is driven through the sleeve and lower end of the upper shaft section, thus fixing such sleeve to the lower end of said next upper section. The successive pump casing sections are screwed together bv coupling collars 27 in the usual way and the work thus proceeds as the sections are lowered into the well.

In practical operation the sleeve thus consaid casing; said sleeve being slightly spaced from said casing and rotating with the propeller and provided with tangential slits to emit a supply of liquid to produce pressure between the sleeve and the casing.

2. In a rotary runner pump having pump casing. a propeller in said casing. an externally. and internally smooth cylindrical sleeve within and spaced from the casing, rotating with the propeller and having slits through said sleeve and provided with interior shearing edges to shear liquid from the column of liquid inside the sleeve and to discharge the liquid so sheared into the space between the sleeve and the tubing.

3. In a rotary runner pump having pump casin a pro eller in said casing, an external ly and internally smooth cylindrical sleeve Within and spaced from the casing, rotating with the propeller and having outwardly widenin slits through. said sleeve and provided with interior shearing edges to shear liquid from the column of liquid inside the sleeve and to discharge the liquid so sheared into the space between the sleeve and casing.

4. In a pump the combination with pump casing of a runner comprising a straight cylindrical sleeve having a smooth interior and provided with tangential slits, propeller blades in the sleeve, and means to rotate the runner in the casing; the forward edges of the rear walls of the slits being sharpto shear liquid from the column in the sleeve as the sleeve rotates.

5. In a pump the combination with pump casing of a runner comprising a straight cylindrical sleeve having a smooth interior and provided with tangentlal sllts, propeller blades in the sleeve, and means to rotate the runner in the casing;-the forward edges of the walls of the slits being sharp to shear liquid from the column in the sleeve as the sleeve rotates, the front walls of the slits being tangentially arranged and the rear walls being rearwardly divergent from such front walls.

6. In a pump a shaft, 9. pum runner comprising a slitted sleeve, prope ler blades inthe sleeve, a hub on which said ropeller blades are mounted; said hub being provided with an extension, there being a seat in the extension; a socket in the shaft corresponding in diameter to the seat a pin in said socket and. seat, and a tubular sleeve on the extension to cover the pin, there be in a hole in the hub extension and the tubular sleeve being dented into said hole.

7. In a pump a shaft, a pump runner comprising a slitted sleeve, propeller blades in the sleeve, a hub on which said propeller blades are mounted; said hub being provided with an extension, there being a seat in the extension; a socket in the shaft corresponding in diameter to the seat, a pin in said socket and seat, and a tubular sleeve on.the extension to cover the pin, there being drifts alined with each other and with the socket and seat through which an instrument may be inserted to drive out the In testimony whereof, we have hereunto set our hands at Los Angeles, California, this 11th day of January, 1916.

JAMES R; PALMER. FENN H. PALMER.

In presence of JAMES R. TOWNSEND. 

